Reader: reader and account flows set Reader as the user's default landing page (#99379)

* When reader flow is complete set Reader as users landing page

* Set Reader as home on start/account/user-social

Author: DustyReagan

client/signup/config/flows-pure.js

@@ -1,6 +1,8 @@
 import { isEnabled } from '@automattic/calypso-config';
 import { HOSTING_LP_FLOW, ONBOARDING_FLOW, ONBOARDING_GUIDED_FLOW } from '@automattic/onboarding';
 import { translate } from 'i18n-calypso';
+import { savePreference } from 'calypso/state/preferences/actions';
+import { READER_AS_LANDING_PAGE_PREFERENCE } from 'calypso/state/sites/selectors/has-reader-as-landing-page';
 
 const noop = () => {};
 
@@ -90,6 +92,14 @@ export function generateFlows( {
 			providesDependenciesInQuery: [ 'toStepper' ],
 			optionalDependenciesInQuery: [ 'toStepper' ],
 			hideProgressIndicator: true,
+			postCompleteCallback: async ( { dispatch } ) => {
+				dispatch(
+					savePreference( READER_AS_LANDING_PAGE_PREFERENCE, {
+						useReaderAsLandingPage: true,
+						updatedAt: Date.now(),
+					} )
+				);
+			},
 		},
 		{
 			name: 'business',
@@ -372,6 +382,14 @@ export function generateFlows( {
 			lastModified: '2025-01-28',
 			showRecaptcha: true,
 			hideProgressIndicator: true,
+			postCompleteCallback: async ( { dispatch } ) => {
+				dispatch(
+					savePreference( READER_AS_LANDING_PAGE_PREFERENCE, {
+						useReaderAsLandingPage: true,
+						updatedAt: Date.now(),
+					} )
+				);
+			},
 		},
 		{
 			name: 'crowdsignal',

client/signup/main.jsx

@@ -395,7 +395,11 @@ class Signup extends Component {
 
 		if ( flow.postCompleteCallback ) {
 			const siteId = dependencies && dependencies.siteId;
-			await flow.postCompleteCallback( { siteId, flowName: this.props.flowName } );
+			await flow.postCompleteCallback( {
+				siteId,
+				flowName: this.props.flowName,
+				dispatch: this.props.dispatch,
+			} );
 		}
 	};
 
@@ -631,7 +635,7 @@ class Signup extends Component {
 			dependencies.oauth2_client_id && ! progress?.[ 'oauth2-user' ]?.service; // service is set for social signup (e.g. Google, Apple)
 		// If the user is not logged in, we need to log them in first.
 		// And if it's regular oauth client signup, we perform the oauth login because the WPCC user creation code automatically logs the user in.
-		// There’s no need to turn the bearer token into a cookie. If we log user in again, it will cause an activation error.
+		// There's no need to turn the bearer token into a cookie. If we log user in again, it will cause an activation error.
 		// However, we need to skip this to perform a regular login for social sign in.
 		if ( ! userIsLoggedIn && ( config.isEnabled( 'oauth' ) || isRegularOauth2ClientSignup ) ) {
 			debug( `Handling oauth login` );
@@ -1012,9 +1016,10 @@ export default connect(
 			hostingFlow,
 		};
 	},
-	{
+	( dispatch ) => ( {
+		dispatch,
 		submitSignupStep,
 		removeStep,
 		addStep,
-	}
+	} )
 )( Signup );